Jadeite (Jade)

Physical Properties

Hardness: 6.5-7.0 on Mohs scale; Color: Apple green to emerald green, often mottled with white or grey; Luster: Vitreous to greasy; Crystal structure: Monoclinic (fibrous habit); Cleavage: Good (rarely seen in massive forms); Specific Gravity: 3.25-3.35.

Formation & Geological History

Formed in high-pressure, low-temperature metamorphic environments, specifically in subduction zones where oceanic plates meet continental plates. It is typically associated with serpentinite.

Uses & Applications

Primarily used in jewelry (cabochons, beads), decorative carvings, and ornamental art. Historically used for axe heads and weapons due to its extreme toughness.

Geological Facts

Jadeite is the rarer and more valuable of the two minerals known as Jade (the other being Nephrite). The most prized variety is called 'Imperial Jade,' which is a translucent emerald-green caused by chromium.

Field Identification & Locations

Identify by its 'mottled' color distribution and greasy luster. In the field, look for smooth, water-worn boulders in alluvial deposits. Found commonly in Myanmar (Burma), Guatemala, and Japan.

Identified on: 4/18/2026

Mode: Standard